Arrange the following physiological events of inspiration in the correct chronological sequence: (A) Increase in pulmonary volume (B) Air moves into the lungs (C) Contraction of diaphragm and external intercostal muscles (D) Decrease in intra-pulmonary pressure (E) Increase in the volume of thoracic chamber Choose the correct answer from the options given below:

Step-by-step solution

The correct sequence of events during inspiration is: 1. Inspiration is initiated by the contraction of the diaphragm and external intercostal muscles (C). 2. This contraction increases the overall volume of the thoracic chamber (E). 3. The increase in thoracic volume causes a similar increase in pulmonary volume (A), because the lungs are situated in the air-tight thoracic chamber. 4. An increase in pulmonary volume leads to a decrease in intra-pulmonary pressure to less than the atmospheric pressure (D). 5. This